20398950

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1$

素因数の和:359

約数の個数: 144

約数和(自身を含む): 64589616

約数和(自身を除く): 44190666

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 13, 15, 18, 22, 25, 26, 30, 33, 39, 45, 50, 55, 65, 66, 75, 78, 90, 99, 110, 117, 130, 143, 150, 165, 195, 198, 225, 234, 275, 286, 317, 325, 330, 390, 429, 450, 495, 550, 585, 634, 650, 715, 825, 858, 951, 975, 990, 1170, 1287, 1430, 1585, 1650, 1902, 1950, 2145, 2475, 2574, 2853, 2925, 3170, 3487, 3575, 4121, 4290, 4755, 4950, 5706, 5850, 6435, 6974, 7150, 7925, 8242, 9510, 10461, 10725, 12363, 12870, 14265, 15850, 17435, 20605, 20922, 21450, 23775, 24726, 28530, 31383, 32175, 34870, 37089, 41210, 45331, 47550, 52305, 61815, 62766, 64350, 71325, 74178, 87175, 90662, 103025, 104610, 123630, 135993, 142650, 156915, 174350, 185445, 206050, 226655, 261525, 271986, 309075, 313830, 370890, 407979, 453310, 523050, 618150, 679965, 784575, 815958, 927225, 1133275, 1359930, 1569150, 1854450, 2039895, 2266550, 3399825, 4079790, 6799650, 10199475, 20398950]

約数ペア:

[(1, 20398950), (2, 10199475), (3, 6799650), (5, 4079790), (6, 3399825), (9, 2266550), (10, 2039895), (11, 1854450), (13, 1569150), (15, 1359930), (18, 1133275), (22, 927225), (25, 815958), (26, 784575), (30, 679965), (33, 618150), (39, 523050), (45, 453310), (50, 407979), (55, 370890), (65, 313830), (66, 309075), (75, 271986), (78, 261525), (90, 226655), (99, 206050), (110, 185445), (117, 174350), (130, 156915), (143, 142650), (150, 135993), (165, 123630), (195, 104610), (198, 103025), (225, 90662), (234, 87175), (275, 74178), (286, 71325), (317, 64350), (325, 62766), (330, 61815), (390, 52305), (429, 47550), (450, 45331), (495, 41210), (550, 37089), (585, 34870), (634, 32175), (650, 31383), (715, 28530), (825, 24726), (858, 23775), (951, 21450), (975, 20922), (990, 20605), (1170, 17435), (1287, 15850), (1430, 14265), (1585, 12870), (1650, 12363), (1902, 10725), (1950, 10461), (2145, 9510), (2475, 8242), (2574, 7925), (2853, 7150), (2925, 6974), (3170, 6435), (3487, 5850), (3575, 5706), (4121, 4950), (4290, 4755)]